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Cones & Spacers for SD Tactical Tubes

60 Degree Cones & Spacers for SD Tactical Tubes.

You must know what SD Tactical tube you have, or are planning to purchase, before you can choose the internal cones and spacers listed in this category. The cones and spacer diameters are listed by Inside Diameter(I.D.) of your SD tactical tube. You can stack the cones and spacers however you feel would work best for your application. With some simple math you can choose the right cone/spacer stack for your build.

The stack length of (1) cone and (1) standard .750" long spacer is 13/16"(.812").

Remember that your stack length must fit within the tube length you have chosen minus both cap thread lengths.

Illustration (A) below is a basic symmetrical stack up using (8) 60 Deg cones and (8) .750" long spacers with (1) 1.337" long muzzle end spacer for a 8.700" length SDT tube.

Please understand that we can not control the tolerance of SDT's tube lengths, so we also add .01" plus tolerance in the muzzle end spacer length, to try to encapsulate the stack within the tube, rather than bottoming the caps out on the end of the tube, which would result in rattle of the stack in the tube when tightly assembled.